National Museum of Nuclear Science & History
E. C. McAdoo worked for the Roane-Anderson Company.
Ruth Hillard was a technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Dunbar worked in the United States Engineer District Office.
R. C. Wright worked for the Union Carbide & Carbon Corporation.
Helen E. Krinek was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
